Abstract
The study was carried out to automate the operation of the 'Bobcat' tractor for the farming purpose. Bobcat tractor is a hydrostatic tractor that uses levers for steering, breaking and the forward and backward movements. Two set of screw shaft driven by car power window motor were used to move the two levers. The computer program was written to automate the movement of each lever. Bobcat tractor move straight forward when both levers move forward and vice versa. Bobcat tractor will turn left when only the left lever is moved forward and vice versa. The friction between the levers and the attachment was a major concern in this project. The bearing was introduced and the existence space between the levers and the attachment can solve the friction problem. Autonomous tractor increases the effectiveness of the field with little or no help of supervision. Keywords; Bobcat Tractor, Autonomous Tractor, Bio-Production Vehicle, Hydrostatic drive, Lever steering, Master-Slave Tractor
Highlights
Traditional agriculture consumes lots of labor force and induces high cost
The global position system (GPS) is recommended to be installed on the tractor when the tractor is working in field
The Bobcat tractor was modified into an autonomous tractor
Summary
Manual operation is not effective with the current available technology nowadays These are the factors that affect the development of agriculture in our country. A new technology is needed to decrease the labor force and increase the efficiency during production (Wan Ishak, 2007). A new technology, which is a master-slave system comprised of several agriculture tractors, is introduced to replace the huge tractor (O’Connor at el., 1996). A system for autonomous tractor will be developed first before setting up the communication system between master and slave tractor. The autonomous tractor can be further developed to the master-slave system (Wan Ishak, 2009). The difficulty to develop automated tractor increases when the tractor is operated in the changing environment (Brown et al, 1990). The movement of the tractor can be controlled by using the computer
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